doc: update bfd documentation

add a bfd vrf example. explain that it is possible to use both interface
and vrf keyword.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

diff --git a/doc/user/bfd.rst b/doc/user/bfd.rst
index 986d1494a5476a782c2cb507bea660f61749082b..521aa0209c06d10bd3fcac06095eaf5ec1176356 100644 (file)
--- a/doc/user/bfd.rst
+++ b/doc/user/bfd.rst
@@ -72,8 +72,7 @@ BFDd Commands
    peer listener to and the address we should use to send the packets.
    This option is mandatory for IPv6.
 
-   `interface` selects which interface we should use. This option
-   conflicts with `vrf`.
+   `interface` selects which interface we should use.
 
    `vrf` selects which domain we want to use.
 
@@ -296,6 +295,11 @@ Here are the available peer configurations:
      shutdown
     !
 
+    ! configure a peer on an interface from a separate vrf
+    peer 192.168.0.5 interface eth1 vrf vrf2
+     no shutdown
+    !
+
     ! remove a peer
     no peer 192.168.0.3 vrf foo